Avísenme cuando se presente un nuevo incidente de la MSHA en cualquier mina que controle R C Bair.
A BLOCK OF STONE HAD BEEN SEPARATED FROM THEMAIN LEDGE. IT WAS THEN TURNED OVER ON ITS ISDE FOR SPLITTING INTO TWO PIECES. ONEEND OF THE BLOCK WAS PICKED UP BY MEANS OF A WIRE SLING. DEGARMO W AS ATTEMPTING TO SLIDE A TIRE UNDER THE BLOCK AND THE SLING BROKE LETTING THE BLOCK FALL TO THE FLOOR. IT STRUCK A HIGH PLACE CAUSING PART OF THE BLOCK TO SEPARATE AND FALL ON TOP OF HIM.
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.
The federal record itself stays free on this site. What costs money, and why.